Work dossier · summary and historical context
The 'Libellus De Fidei' is a Latin treatise on orthodox Trinitarian faith, traditionally attributed to Phoebaudus of Agen (4th century). It defends Nicene theology against Arian subordinationism, employing creedal affirmations and negations. The work survives in a single late medieval manuscript tradition, with the earliest witness from the 9th century. Its dating is uncertain, but internal references to mid-4th-century Arian controversies suggest composition between ca. 360 and 380. The text was cited by later Gallic synods, such as the Council of Orange (529), as a patristic authority on the Trinity, and appears in Carolingian florilegia. Attribution to Phoebaudus is traditional but disputed; some scholars assign it to an anonymous Gallic author.
The 'Libellus De Fidei' is a rare Gallic witness to 4th-century Nicene theology, bridging Eastern conciliar definitions and Western Latin expression. It was later used as a patristic authority in Gallic synods and Carolingian collections, influencing medieval Trinitarian doctrine. Its disputed authorship and fragmentary transmission highlight the challenges of reconstructing early Christian literary traditions.
The 'Libellus De Fidei' was likely composed in Gaul during the mid- to late 4th century, a period of intense Trinitarian controversy following the Council of Nicaea (325). The work reflects the struggle between Nicene orthodoxy, which affirmed the Son's consubstantiality (homoousios) with the Father, and various Arian or semi-Arian positions that subordinated the Son. Phoebaudus, bishop of Agen, was a known Nicene supporter who participated in the Council of Rimini (359). The treatise's creedal structure echoes the Niceno-Constantinopolitan Creed but expands on Trinitarian theology. The manuscript tradition is sparse: the earliest surviving witness dates from the 9th century, and the text was transmitted through Carolingian florilegia and cited by the Council of Orange (529). Scribal interpolations are possible, especially in doctrinal passages. The attribution to Phoebaudus rests on a single medieval manuscript heading and is not universally accepted; some scholars posit an anonymous Gallic author.
Apparatus · what the pipeline recorded
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